package org.example.mapper;

import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Select;
import org.example.pojo.Vip;



@Mapper
public interface VipMapper extends BaseMapper<Vip> {//继承mybatisplus
    @Select("select * from vip where username=#{username};")
    Vip selectByUserName(String  username);
}
